Question 1145765
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From the first equation, express x = 150 - y  and substitute it into the second equation. 

You will get the equation for "y", the number of $5 items


    2*(150-y) + 5y = 405   dollars.


From this equation, express "y" and calculate


    y = {{{(405-2*150)/(5-2)}}} = 35.


<U>ANSWER</U>.  35 of the $5 items were sold.
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